120438557 has 8 divisors (see below), whose sum is σ = 133068096. Its totient is φ = 108425152.

The previous prime is 120438547. The next prime is 120438611. The reversal of 120438557 is 755834021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120438557 - 2⁴ = 120438541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120438547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153623 + ... + 154404.

It is an arithmetic number, because the mean of its divisors is an integer number (16633512).

Almost surely, 2^120438557 is an apocalyptic number.

120438557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

120438557 is a deficient number, since it is larger than the sum of its proper divisors (12629539).

120438557 is a wasteful number, since it uses less digits than its factorization.

120438557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308067.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 120438557 is about 10974.4501912397. The cubic root of 120438557 is about 493.8425591151.

The spelling of 120438557 in words is "one hundred twenty million, four hundred thirty-eight thousand, five hundred fifty-seven".